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发明名称
ORE ROASTING FURNACE
摘要
申请公布号
CA315136(A)
申请公布日期
1931.09.15
申请号
CAD315136
申请日期
申请人
WILLIAM J. CUMMINGS;HERBERT G. CUMMINGS
发明人
HERBERT G. CUMMINGS;WILLIAM J. CUMMINGS
分类号
主分类号
代理机构
代理人
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